MasterPage2.master.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls; 
using System.Data.SqlClient;
using System.Data; 
using ClassLibrary1;
using ClassLibrary2;
public partial class MasterPage2 : System.Web.UI.MasterPage
{ 
    string str = System.Configuration.ConfigurationManager.AppSettings["str_con"].ToString(); //连接数据库
    SqlConnection con = null;
    SqlCommand cmd = null;
    protected void Page_Load(object sender, EventArgs e)
    {
        L_online.Text = "本站当前有：<b>" + Application["user_sessions"].ToString() + "" + "</b>位访问者！";
        if (!IsPostBack)
        {
            HttpCookie cookie = Request.Cookies["USER_COOKIE"];
            if (cookie != null)
            {
                this.username.Text = cookie["UserName"];
                this.password.Attributes.Add("value", cookie["UserPassword"]);
                this.cb_pwd.Checked = true;//选中记住密码
            }
            if (Session["login"] != null)
            {
                L_display.Text = display_value.relname;
                Image1.ImageUrl = display_value.image;
                Panel1.Visible = true;
                Panel2.Visible = false;
            }
            else
            {
                Panel1.Visible = false;
                Panel2.Visible = true;
            } 
        }
    } 
  
     protected void but_login_Click(object sender, ImageClickEventArgs e)//登录
    {
         string user = username.Text.ToString();
         string pwd = password.Text.ToString();
         rember_pwd(); //记住密码
         if (radio_admin.Checked)
         {
             con = new SqlConnection(str);
             string sql = "SELECT [adminUser],[userPwd],[photo] FROM [dbo].[管理员信息表] WHERE adminUser='" + user + "' and userPwd='" + pwd + "'";
             con.Open();
             cmd = new SqlCommand(sql, con);
             if (cmd.ExecuteScalar() != null)
             {
                 SqlDataReader dr = cmd.ExecuteReader();
                 dr.Read();
                 Value.adminyhm = dr["adminUser"].ToString(); 
                 Value.photo=dr["photo"].ToString();
                 dr.Close();